document.write( "Question 12498: Take any number. Add 10, multiply by 2, add 100, divide by 2 and subtract the original number. The answer will be the number of minutes in a hour. Why? \n" ); document.write( "

Algebra.Com's Answer #6357 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
This is easy to see when you write down the algebraic expression.\r
\n" ); document.write( "\n" ); document.write( "Let the number be x.\r
\n" ); document.write( "\n" ); document.write( " $\"%28%282%28x+%2B+10%29+%2B+100%29%2F2%29+-+x\"$ Simplify.
\n" ); document.write( " $\"%282%28x+%2B+10+%2B+50%29%2F2%29+-+x\"$
\n" ); document.write( " $\"x+%2B+10+%2B+50+-+x\"$
\n" ); document.write( " $\"10+%2B+50+=+60\"$ So you always get 60, the number of minutes in an hour. \n" ); document.write( "

\n" );